CN113203557A - Test equipment for natural storage life test of sealing diaphragm - Google Patents
Test equipment for natural storage life test of sealing diaphragm Download PDFInfo
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- CN113203557A CN113203557A CN202110321754.7A CN202110321754A CN113203557A CN 113203557 A CN113203557 A CN 113203557A CN 202110321754 A CN202110321754 A CN 202110321754A CN 113203557 A CN113203557 A CN 113203557A
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- 238000007789 sealing Methods 0.000 title claims abstract description 119
- 238000012360 testing method Methods 0.000 title claims abstract description 54
- 238000003860 storage Methods 0.000 title claims abstract description 24
- 239000012528 membrane Substances 0.000 claims abstract description 32
- 239000012530 fluid Substances 0.000 claims abstract description 20
- 230000006835 compression Effects 0.000 claims description 32
- 238000007906 compression Methods 0.000 claims description 32
- 210000004907 gland Anatomy 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 13
- 238000003825 pressing Methods 0.000 claims description 10
- 229910001220 stainless steel Inorganic materials 0.000 claims description 10
- 239000010935 stainless steel Substances 0.000 claims description 10
- 239000011521 glass Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910002804 graphite Inorganic materials 0.000 claims description 7
- 239000010439 graphite Substances 0.000 claims description 7
- 230000007774 longterm Effects 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 4
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- 230000037452 priming Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Fluid-Driven Valves (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention relates to a test device for a natural storage life test of a sealing diaphragm, which comprises: the sealing device comprises a spring pressure accumulator module, a one-way valve filling module and a sealing device body module; the spring pressure accumulator module and the one-way valve filling module are respectively connected to two ends of the sealing device body module; the one-way valve filling module is used for filling and sealing fluid in one way in the sealing device body module; the spring pressure accumulator module is used for compressing and pressurizing fluid media in the sealing device body module, and the fluid media in the sealing device body module are ensured to be in a controllable pressure range; the sealing device body module is provided with an inlet membrane assembly and an outlet membrane assembly to be tested. The test equipment solves the problem of sealing pressure-resistant reliability of the inlet and outlet sealing diaphragm matched with the turbine pump under the natural storage condition.
Description
Technical Field
The invention relates to a testing device for a membrane life test, in particular to a testing device for a sealed membrane natural storage life test, which is mainly used for checking the problem of sealing pressure resistance reliability of a sealed membrane under a natural storage condition.
Background
The inlet and outlet sealing diaphragms matched with the turbine pump need to be subjected to a reliability test under a specific pressure state under a natural storage condition, in practical application, the inlet and outlet sealing diaphragms are directly assembled on the turbine pump and are connected with other auxiliary energy equipment to pressurize the turbine pump cavity, so that the sealing diaphragms are subjected to natural storage under the specific storage pressure state to check the reliability of the sealing diaphragms, the test mode needs more equipment, the number of the diaphragms which can be checked in a single test process is small, and the overall test cost is high.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the defects of the prior art are overcome, the test equipment for the natural storage life test of the sealing diaphragm is provided, and the problem of sealing pressure-resistant reliability of the inlet and outlet sealing diaphragm matched with the turbine pump under the natural storage condition is solved.
The technical solution of the invention is as follows:
a test apparatus for a sealed membrane natural shelf life test, comprising: the sealing device comprises a spring pressure accumulator module, a one-way valve filling module and a sealing device body module;
the spring pressure accumulator module and the one-way valve filling module are respectively connected to two ends of the sealing device body module; the one-way valve filling module is used for filling and sealing fluid in one way in the sealing device body module; the spring pressure accumulator module is used for compressing and pressurizing fluid media in the sealing device body module, and the fluid media in the sealing device body module are ensured to be in a controllable pressure range; the sealing device body module is provided with an inlet membrane assembly and an outlet membrane assembly to be tested.
Furthermore, the inlet diaphragm assembly comprises an inlet diaphragm seat, a first sealing ring and an organic glass diaphragm; the organic glass diaphragm is installed on the entry diaphragm seat to it is spacing through the step on the entry diaphragm seat, seal through first sealing washer between organic glass diaphragm and the entry diaphragm seat.
Further, the outlet diaphragm assembly comprises an outlet diaphragm seat, a pressure ring and a stainless steel diaphragm; the stainless steel diaphragm is clamped between the outlet diaphragm seat and the pressing ring, and the outlet diaphragm seat, the pressing ring and the stainless steel diaphragm are connected through gluing or laser welding.
Further, the sealing device body module comprises an inlet diaphragm sealing assembly switching, an outlet diaphragm sealing assembly switching, an oil cavity shell, a second sealing ring and a sealing gasket;
the inlet diaphragm sealing assembly switching and the outlet diaphragm sealing assembly switching are connected to the oil cavity shell through threads and are sealed at the end face through a sealing gasket, and an annular groove in the oil cavity shell is used for installing a second sealing ring.
Further, the inlet diaphragm sealing assembly comprises an inlet adapter, a gland, a flexible graphite sealing gasket and a standard connecting piece in a switching way; the inlet diaphragm assembly is arranged between the inlet adapter and the gland and is limited by the switching annular groove on the inlet adapter and the gland annular groove on the gland, the switching annular groove and the gland annular groove are respectively provided with a flexible graphite sealing gasket for sealing the press-fit end face, and the gland and the inlet adapter are locked and connected through a standard connecting piece.
Further, the outlet diaphragm sealing assembly comprises an outlet adapter, a simulated flame exhaust pipe, an outer sleeve nut and a sealing rubber gasket in a switching way; export membrane subassembly suit is to export adapter's outer face of cylinder on to support on export adapter's terminal surface, seal the cushion in the encryption between export membrane subassembly and the export adapter, export membrane subassembly arranges the right-hand member face that flame pipe supported export membrane subassembly through the simulation, and will simulate through the overcoat nut and arrange the flame pipe and compress tightly on export membrane subassembly.
Further, the spring accumulator module comprises an accumulator seat, a first compression spring, a booster piston, a thrust bearing, a spring seat, an adjusting nut, a guide rod and a locking nut;
the guide rod is screwed on the booster piston through threads, the first compression spring seat is arranged on the outer end face of the booster piston, the other end of the first compression spring is arranged on the spring seat, the first compression spring, the spring seat, the thrust bearing and the adjusting nut are sequentially sleeved on the guide rod and are finally locked through the locking nut, and the booster piston, the first compression spring, the spring seat, the thrust bearing and the adjusting nut are sequentially connected into a whole through the guide rod; the adjusting nut is installed on the pressure accumulator base through threads, and the guide rod can slide in the spring seat and the inner hole of the adjusting nut relatively.
Further, the one-way valve filling module comprises a valve body, a valve core, a second compression spring and a pressure adjusting knob;
the pressure adjusting knob is screwed on the internal thread of the valve body through the external thread, the valve core is inserted in the inner hole of the pressure adjusting knob and can freely move axially, the second compression spring is sleeved on the valve core and abuts between the lower end face of the hemispherical head of the valve core and the end face of the pressure adjusting knob, and the hemispherical head of the valve core abuts against the inner conical surface of the valve body and plays a role in sealing.
Furthermore, in the actual working process, the hemispherical head of the valve core is pressed against the inner conical surface of the valve body to play a sealing role under the action of the pressure adjusting knob and the second compression spring, and the opening pressure of the valve core is adjusted by rotating the pressure adjusting knob; the one-way filling of external fluid into the valve is realized through the horn mouth on the valve body, the hole on the pressure adjusting knob is used for through flow of the fluid in the valve, the external thread on the valve body is used for connecting the valve with the oil cavity shell in the sealing device body, and the annular groove on the valve body is used for installing a third sealing ring.
Further, the filling is carried out through a one-way valve filling module, when the pressure of the filled liquid reaches the preset requirement, the liquid pushes away a pressurizing piston, and the liquid maintains the specific pressure for storage under the action of a spring pressure accumulator module, so that the reliability test examination is carried out on the long-term storage of the inlet diaphragm assembly and the outlet diaphragm assembly under the specific pressure condition; according to the pressure demand in the test process, the compression amount of the first compression spring is adjusted by rotating the adjusting nut, and then the pressure of the liquid in the cavity can be adjusted.
Compared with the prior art, the invention has the beneficial effects that:
(1) the technical scheme of the test equipment can reduce the cost, optimize the test process, reduce the number of occupied equipment, increase the number of examination samples in a single test and specially solve the problem of the test of the sealing pressure resistance reliability under the natural storage condition of the sealing diaphragm.
(2) The invention mainly adopts the modularized design concept, namely a spring accumulator module, a one-way valve filling module and a sealing device body module are respectively designed. The sealing device is filled with fluid medium with certain pressure through the one-way valve, the fluid medium is stored and pressurized through the spring pressure accumulator after filling, and reliability examination can be carried out on inlet and outlet sealing membranes with different structural sizes under the condition of long-term pressurized storage through replacing different tested sealing assembly modules on the sealing device body.
(3) The invention can test the sealing performance and reliability of the inlet and outlet sealing diaphragm matched with the turbine pump under long-term natural storage within the storage pressure range of 0.1-2.5MPa, and the pressure variation range can be adjusted according to the test condition in the storage process.
(4) The examination diaphragm suitable for the device is mainly provided with two forms, namely an inlet diaphragm and an outlet diaphragm, wherein the inlet diaphragm is mainly of a plug-in type structure and consists of a sealing ring, a diaphragm and a diaphragm seat, and the outlet diaphragm is mainly of a bonding type or a welding type and is formed by bonding or welding a stainless steel diaphragm, a diaphragm seat and a pressing ring.
Drawings
FIG. 1 is a schematic view of an inlet diaphragm assembly;
FIG. 2 is a front view of an outlet diaphragm assembly configuration;
FIG. 3 is a right side view of a structural arrangement of the outlet diaphragm assembly;
FIG. 4 is a schematic view of an adapter structure of the inlet diaphragm seal assembly;
FIG. 5 is a schematic view of an adapter structure of the outlet diaphragm seal assembly;
FIG. 6 general structural scheme of the present invention FIG. 1;
FIG. 7 general structural scheme of the present invention FIG. 2;
FIG. 8 is a block diagram of a spring accumulator module;
FIG. 9 is a schematic diagram of a one-way valve filling module;
FIG. 10 is a schematic view of a sealing device body oil chamber housing configuration.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
The invention generally comprises three major parts, namely a spring accumulator module, a one-way valve filling module and a sealing device body module.
The spring accumulator module is mainly used for compressing and pressurizing fluid media in the test equipment so as to ensure that the fluid media in the test equipment is in a controllable pressure range for a long time, and mainly comprises an accumulator seat, a compression spring, a pressurizing piston, a thrust bearing, a spring seat, an adjusting nut, a guide rod, a locking nut and the like.
The one-way valve filling module is mainly used for filling fluid in a test device in a one-way mode and playing a sealing role, the one-way valve filling module can also achieve a starting pressure adjusting function, and the one-way valve module mainly comprises a valve body, a valve core, a compression spring, a pressure adjusting knob and the like.
In the sealing device body module, a tested sealing assembly is mainly used for providing an installation space for an inlet diaphragm assembly and an outlet diaphragm assembly through switching, and realizing sealing connection with an oil cavity shell, the oil cavity shell is mainly used for providing installation and sealing interfaces for the tested sealing assembly through switching, a spring pressure accumulator module, a one-way valve filling module and the like, and storing sealing media, and the module mainly comprises the inlet diaphragm sealing assembly through switching, the outlet diaphragm sealing assembly through switching, the oil cavity shell, a standard connecting piece, a sealing ring and a sealing gasket; the inlet diaphragm sealing assembly switching mainly comprises a tested inlet diaphragm assembly, a gland, an adapter, a flexible graphite sealing ring, a standard connecting piece and the like, and the outlet diaphragm sealing assembly switching mainly comprises a tested outlet diaphragm assembly, a simulated exhaust flame pipe, an adapter and a casing nut.
As shown in figure 1, the inlet membrane assembly 1 to be examined comprises a membrane seat 2, a sealing ring 3 and an organic glass membrane 4, wherein the organic glass membrane 4 is installed on the membrane seat 2 and limited by a step 5 on the membrane seat 2, and the organic glass membrane 4 and the membrane seat 2 are sealed by the sealing ring 3.
As shown in fig. 2 and 3, the outlet diaphragm assembly 6 to be evaluated in the present invention mainly comprises a diaphragm seat 7, a pressing ring 8 and a stainless steel diaphragm 9, wherein the stainless steel diaphragm 9 is sandwiched between the diaphragm seat 7 and the pressing ring 8, and the diaphragm seat 7, the pressing ring 8 and the stainless steel diaphragm 9 can be connected by gluing or laser welding.
As shown in fig. 4, the inlet diaphragm seal assembly adapter 10 is mainly composed of an inlet diaphragm assembly 1, an adapter 11, a gland 12, flexible graphite 13 and a standard connector. The inlet diaphragm assembly 1 is installed between the adapter 11 and the gland 12 and limited by an annular groove 15 on the adapter 11 and an annular groove 14 on the gland 12, flexible graphite sealing gaskets 13 are respectively installed in the annular grooves 15 and 14 to seal the pressing end faces, and the gland 12 and the adapter 11 are connected in a locking mode through standard part bolts and nuts.
As shown in fig. 5, the outlet diaphragm sealing assembly adaptor 16 mainly comprises an outlet diaphragm assembly 2, an adaptor 17, a simulated exhaust flame tube 18, a casing nut 19 and a sealing rubber gasket 20; export diaphragm assembly 2 suit is to adapter 17 on the outer cylinder face 21 to on the terminal surface 22 of support joint 17, seal the cushion 20 in the encryption between export diaphragm assembly 2 and the adapter 17, export diaphragm assembly 2 supports its right-hand member face through simulation row's flame pipe 18, and will simulate row's flame pipe 18 and export diaphragm assembly 2 and lock on adapter 17 in proper order through overcoat nut 19.
As shown in FIG. 8, the spring pressure accumulator module 23 of the present invention is connected to the left end surface of the oil chamber housing 50 by standard bolt and nut, the pressurizing piston 25 of the spring pressure accumulator module 23 is inserted into the inner chamber space 28 of the oil chamber housing 50, and the pressurizing piston 25 and the inner chamber space 28 are sealed by the sealing ring 46. The check valve filling module 29 is screwed and mounted in the internal thread 48 of the oil chamber housing 50 through the external thread 31 of the valve body 49, and the check valve filling module 29 and the oil chamber housing 50 are sealed by a seal ring 47.
As shown in fig. 8, the spring accumulator module 23 is mainly composed of an accumulator seat 26, a compression spring 32, a booster piston 25, a thrust bearing 29, a spring seat 31, an adjusting nut 30, a guide rod 27, a lock nut 28, and the like. The guide rod 27 is screwed on the booster piston 25 through threads, the compression spring 32 is seated on the outer end face 33 of the booster piston 25, the other end of the compression spring 32 is seated on the spring seat 31, the compression spring 32, the spring seat 31, the thrust bearing 29 and the adjusting nut 30 are sequentially sleeved on the guide rod 27, and finally the booster piston 25, the compression spring 32, the spring seat 31, the thrust bearing 29, the adjusting nut 30 and the like are sequentially connected in series into a whole through the locking nut 28 and the guide rod 27. The adjustment nut 30 is threadably mounted on the accumulator seat 26, and the guide rod 27 is axially slidable in the spring seat 31 and the inner bore of the adjustment nut 30.
As shown in fig. 9, the check valve filling module 29 mainly comprises a valve body 49, a valve core 35, a compression spring 36, a pressure adjusting knob 34, etc., wherein the pressure adjusting knob 34 is screwed on an internal thread 41 of the valve body 49 through an external thread 40, the valve core 35 is inserted into an inner hole 42 of the pressure adjusting knob 34 and can freely move axially, the compression spring 36 is sleeved on the valve core 35 and abuts between the lower end face of the hemispherical head 37 of the valve core 35 and the end face 44 of the pressure adjusting knob 34, and the valve core spherical head 37 abuts against the inner conical surface 38 of the valve body 49 and plays a role in sealing. In the actual working process, the valve core ball 37 is pressed against the inner conical surface 38 of the valve body 49 to play a sealing role by the action of the adjusting knob 34 and the compression spring 36, and the opening pressure of the valve core 35 can be adjusted by rotating the adjusting knob 34. The one-way filling of the inside of the valve by outside fluid can be realized through the bell mouth 43 on the valve body 49, the hole 39 on the pressure adjusting knob 34 is used for the through flow of the fluid in the valve, the external thread 31 on the valve body 49 is used for connecting the one-way valve filling module 29 with the oil chamber shell 50, and the annular groove 53 on the valve body 49 is used for installing the sealing ring 47.
The seal assembly body 24 is mainly composed of an inlet diaphragm seal assembly adapter 10, an outlet diaphragm seal assembly adapter 16, an oil chamber housing 50, seal rings 46 and 47, a seal gasket 45, standard connector bolts and nuts, and the like. The inlet diaphragm seal assembly adapter 10, the outlet diaphragm seal assembly adapter 16 are threadably attached to the oil chamber housing 50 and are end-sealed with a sealing gasket 45, and an annular groove 52 in the oil chamber housing 50 is provided for receiving the sealing ring 46. A detailed structural view of the oil chamber housing 50 is shown in fig. 10.
In practical application, the device of the invention fills the liquid through the one-way valve filling module 29, when the pressure of the filled liquid reaches a certain requirement, the liquid in the device pushes away the pressurizing piston 25, and the liquid in the device maintains a specific pressure under the action of the spring pressure accumulator module 23 for storage, so that the sealing reliability test examination is carried out on the long-term storage of the inlet diaphragm assembly 1 and the outlet diaphragm assembly 6 under a specific pressure condition. In the test process, the compression amount of the compression spring 32 can be adjusted by rotating the adjusting nut 30 according to the pressure requirement, and then the pressure of the liquid in the cavity can be adjusted.
In the scheme of the invention, the number of the openings 51 on the oil chamber shell 50 can be determined according to the number of inlet and outlet diaphragms to be checked, and in addition, the holes on the oil chamber shell 50 can be connected with a pressure gauge to visually display the pressure stored in the chamber.
Those matters not described in detail in the present specification are well known in the art.
Claims (10)
1. A test equipment for a sealed membrane natural storage life test is characterized by comprising: a spring accumulator module (23), a one-way valve priming module (29) and a sealing device body module (24);
the spring pressure accumulator module (23) and the one-way valve filling module (29) are respectively connected to two ends of the sealing device body module (24); the one-way valve filling module (29) is used for filling and sealing fluid in the sealing device body module (24) in one way; the spring pressure accumulator module (23) is used for compressing and pressurizing fluid media in the sealing device body module (24) and ensuring that the fluid media in the sealing device body module (24) is in a controllable pressure range; the sealing device body module (24) is provided with an inlet diaphragm assembly (1) and an outlet diaphragm assembly (6) to be tested.
2. A test apparatus for a natural shelf life test of a sealing membrane according to claim 1, wherein: the inlet diaphragm assembly (1) comprises an inlet diaphragm seat (2), a first sealing ring (3) and an organic glass diaphragm (4); organic glass diaphragm (4) are installed on entry diaphragm seat (2) to it is spacing through step (5) on entry diaphragm seat (2), seal through first sealing washer (3) between organic glass diaphragm (4) and entry diaphragm seat (2).
3. A test apparatus for a natural shelf life test of a sealing membrane according to claim 1, wherein: the outlet diaphragm assembly (6) comprises an outlet diaphragm seat (7), a pressure ring (8) and a stainless steel diaphragm (9); the stainless steel diaphragm (9) is clamped between the outlet diaphragm seat (7) and the pressing ring (8), and the outlet diaphragm seat (7), the pressing ring (8) and the stainless steel diaphragm (9) are connected through gluing or laser welding.
4. A test apparatus for a natural shelf life test of a sealing membrane according to claim 1, wherein: the seal assembly body module (24) comprises an inlet diaphragm seal assembly adapter (10), an outlet diaphragm seal assembly adapter (16), an oil chamber housing (50), a second seal ring (46) and a seal gasket (45);
the inlet diaphragm sealing assembly adapter (10) and the outlet diaphragm sealing assembly adapter (16) are connected to the oil chamber shell (50) through threads and are sealed at the end face by a sealing gasket (45), and an annular groove (52) on the oil chamber shell (50) is used for installing a second sealing ring (46).
5. The test apparatus for natural shelf life test of sealing membrane according to claim 4, wherein: the inlet diaphragm sealing assembly adapter (10) comprises an inlet adapter (11), a gland (12), a flexible graphite sealing gasket (13) and a standard connecting piece; the inlet diaphragm assembly (1) is installed between the inlet adapter (11) and the gland (12), the switching annular groove (15) on the inlet adapter (11) is limited with the gland annular groove (14) on the gland (12), the flexible graphite sealing gasket (13) is respectively installed in the switching annular groove (15) and the gland annular groove (14) to seal the pressing end face, and the gland (12) and the inlet adapter (11) are connected in a locking mode through a standard connecting piece.
6. The test apparatus for natural shelf life test of sealing membrane according to claim 4, wherein: the outlet diaphragm sealing assembly switching device (16) comprises an outlet adapter (17), a simulated exhaust flame pipe (18), an outer sleeve nut (19) and a sealing rubber gasket (20); export diaphragm subassembly (2) suit is to the outer face of cylinder (21) of export adapter (17) on to support on terminal surface (22) of export adapter (17), encrypt between export diaphragm subassembly (2) and export adapter (17) and seal cushion (20), export diaphragm subassembly (2) support the right-hand member face of export diaphragm subassembly (2) through simulating to arrange flame pipe (18), and compress tightly on export diaphragm subassembly (2) through overcoat nut (19) will simulate to arrange flame pipe (18).
7. The test apparatus for natural storage life test of sealing membrane according to claim 6, wherein: the spring accumulator module (23) comprises an accumulator seat (26), a first compression spring (32), a booster piston (25), a thrust bearing (29), a spring seat (31), an adjusting nut (30), a guide rod (27) and a locking nut (28);
the guide rod (27) is screwed on the booster piston (25) through threads, a first compression spring (32) is seated on the outer end face (33) of the booster piston (25), the other end of the first compression spring (32) is seated on a spring seat (31), the first compression spring (32), the spring seat (31), the thrust bearing (29) and the adjusting nut (30) are sequentially sleeved on the guide rod (27) and are finally locked through a locking nut (28), and the booster piston (25), the first compression spring (32), the spring seat (31), the thrust bearing (29) and the adjusting nut (30) are sequentially connected in series into a whole through the guide rod (27); the adjusting nut (30) is installed on the pressure accumulator base (26) through threads, and the guide rod (27) can slide in the spring seat (31) and the inner hole of the adjusting nut (30) relatively.
8. The test apparatus for natural shelf life testing of sealing membranes according to claim 7, wherein: the one-way valve filling module (29) comprises a valve body (49), a valve core (35), a second compression spring (36) and a pressure adjusting knob (34);
the pressure adjusting knob (34) is screwed on an internal thread (41) of the valve body (49) through an external thread (40), the valve core (35) is inserted in an inner hole (42) of the pressure adjusting knob (34) and can freely move axially, the second compression spring (36) is sleeved on the valve core (35) and abuts between the lower end face of the hemispherical head (37) of the valve core (35) and the end face (44) of the pressure adjusting knob (34), and the hemispherical head (37) of the valve core abuts against the inner conical surface (38) of the valve body (49) and plays a role in sealing.
9. The test apparatus for natural shelf life testing of sealing membranes according to claim 8, wherein: in the actual working process, the valve core hemispherical head (37) is pressed against the inner conical surface (38) of the valve body (49) to play a sealing role under the action of the pressure adjusting knob (34) and the second compression spring (36), and the opening pressure of the valve core (35) is adjusted by rotating the pressure adjusting knob (34); the one-way filling of outside fluid into the valve is realized through a horn mouth (43) on the valve body (49), a hole (39) on a pressure adjusting knob (34) is used for through flow of the fluid in the valve, an external thread (31) on the valve body (49) is used for connecting the valve with an oil cavity shell (50) in a sealing device body (24), and an annular groove (53) on the valve body (49) is used for installing a third sealing ring (47).
10. The test apparatus for natural shelf life testing of sealing membranes according to claim 8, wherein: the one-way valve filling module (29) is used for filling, when the pressure of the filled liquid reaches the preset requirement, the liquid pushes away the pressurizing piston (25), and the liquid maintains the specific pressure under the action of the spring pressure accumulator module (23) for storage, so that the reliability test and the check are carried out on the long-term storage of the inlet diaphragm assembly (1) and the outlet diaphragm assembly (6) under the specific pressure condition; in the test process, according to the pressure requirement, the compression amount of the first compression spring (32) is adjusted by rotating the adjusting nut (30), and then the pressure of liquid in the cavity can be adjusted.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110321754.7A CN113203557B (en) | 2021-03-25 | 2021-03-25 | Test equipment for natural storage life test of sealing diaphragm |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110321754.7A CN113203557B (en) | 2021-03-25 | 2021-03-25 | Test equipment for natural storage life test of sealing diaphragm |
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| CN113203557A true CN113203557A (en) | 2021-08-03 |
| CN113203557B CN113203557B (en) | 2022-10-28 |
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| CN110439874A (en) * | 2019-08-23 | 2019-11-12 | 江苏神通阀门股份有限公司 | A kind of rubber diaphragm life test air cylinder device |
| CN111795814A (en) * | 2020-07-10 | 2020-10-20 | 无锡职业技术学院 | A MEMS micropump diaphragm life testing device and testing method thereof |
| CN112326438A (en) * | 2020-09-16 | 2021-02-05 | 北京北机机电工业有限责任公司 | High-efficient testing arrangement of diaphragm material pressure |
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2021
- 2021-03-25 CN CN202110321754.7A patent/CN113203557B/en active Active
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| US20030089402A1 (en) * | 2001-11-09 | 2003-05-15 | Gregoire Roger J. | Metal diaphragm structure for pressure regulators |
| CN1900572A (en) * | 2006-07-21 | 2007-01-24 | 王海平 | Automatic pressure reducing flow stable valve |
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| CN110439874A (en) * | 2019-08-23 | 2019-11-12 | 江苏神通阀门股份有限公司 | A kind of rubber diaphragm life test air cylinder device |
| CN111795814A (en) * | 2020-07-10 | 2020-10-20 | 无锡职业技术学院 | A MEMS micropump diaphragm life testing device and testing method thereof |
| CN112326438A (en) * | 2020-09-16 | 2021-02-05 | 北京北机机电工业有限责任公司 | High-efficient testing arrangement of diaphragm material pressure |
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| CN113203557B (en) | 2022-10-28 |
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